155566141 has 2 divisors, whose sum is σ = 155566142. Its totient is φ = 155566140.

The previous prime is 155566127. The next prime is 155566171. The reversal of 155566141 is 141665551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150160516 + 5405625 = 12254^2 + 2325^2 .

It is a cyclic number.

It is not a de Polignac number, because 155566141 - 2¹⁷ = 155435069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155566097 and 155566106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155566171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77783070 + 77783071.

It is an arithmetic number, because the mean of its divisors is an integer number (77783071).

Almost surely, 2^155566141 is an apocalyptic number.

It is an amenable number.

155566141 is a deficient number, since it is larger than the sum of its proper divisors (1).

155566141 is an equidigital number, since it uses as much as digits as its factorization.

155566141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 34.

The square root of 155566141 is about 12472.6156438816. The cubic root of 155566141 is about 537.8217475834.

The spelling of 155566141 in words is "one hundred fifty-five million, five hundred sixty-six thousand, one hundred forty-one".